Open AccessCan the 6-minute walking test evaluate all patients with respiratory disease?
Author(s) -
Marta R. Q. Pimentel,
Yves Raphael,
Luciane V. B. Nascimento,
Rogério Rufino,
Adalgisa Ieda Maiworm,
Kenia Maynard da Silva,
Cláudia Henrique da Costa
Publication year - 2019
Publication title -
brazilian journal of health and biomedical sciences
Language(s) - English
Resource type - Journals
ISSN - 2674-8207
DOI - 10.12957/bjhbs.2019.53507
Subject(s) - copd , medicine , interstitial lung disease , idiopathic pulmonary fibrosis , cardiology , respiratory system , pulmonary function testing , oxygen saturation , lung , physical therapy , chemistry , organic chemistry , oxygen
The 6-minute walking test (6MWT) is a submaximal testused as a clinical indicator of functional capacity in patientswith pulmonary disease. However, is has not been definedwhether the parameters obtained in the 6MWT are similarin two groups of interstitial lung diseases (ILD), systemic sclerosis(SSc) and idiopathic pulmonary fibrosis (IPF), and whatare the differences when compared to patients with chronicobstructive pulmonary disease (COPD). This is a comparativecross-sectional study of 6MWT data, with the inclusion of 32patients with SSc, 32 with IPF and 50 with COPD. All patientsunderwent the 6MWT and a respiratory function test. Patientswith ILD did not present significant differences when comparedwith each other. However, when compared to patientswith COPD, the ILD group showed greater distance walked(ILD = 404.6 ± 1.09m, COPD = 352.4 ± 10.80m; p = 0.0033) andpredicted percentage above 100% (ILD = 113.5 ± 3.72%, COPD= 84.36 ± 4.81%; p <0.0001). Both groups showed a drop inblood oxygen saturation (SaO2) at the end of the test, but thedifference between the measured values before and after the6MWT was more significant in the ILD group (ILD = 10.33 ±01.09%, COPD = 4.60 ± 12.37%; p <0.0001). The data suggestthat, differently from COPD patients, the main parameter tobe evaluated during the 6MWT in the ILD group could be thedrop in saturation and not the distance walked.Keywords: COPD; Lung diseases, Interstitial; RespiratoryFunction Tests; Walk Test; Walking.